

Replies stack into a thread in chronological order so clicking on a post allows reading the full conversation. However if tags/mentions are included others who have subscribed to those will see those comments in their notifications and when they click on them it will again show the full conversation though scrolled to the specific message that triggered the notification.
I personally have a couple pinned tags that particularly interest me and then several more of lesser interest that just flow through my notification pane.

No. I ended up switching to this guy and has been awesome:
https://a.co/d/06A84yWM